hash.c: fix symbol hash

* hash.c (rb_sym_hash): return same value as rb_any_hash() of
  Symbol.  [Bug #9381]

git-svn-id: svn+ssh://ci.ruby-lang.org/ruby/trunk@51426 b2dd03c8-39d4-4d8f-98ff-823fe69b080e

1 files changed, 3 insertions, 0 deletions

diff --git a/string.c b/string.c
index bf07d97c1f..0a8f4e1d9c 100644
--- a/string.c
+++ b/string.c
@@ -9149,6 +9149,8 @@ rb_to_symbol(VALUE name)
     return rb_str_intern(name);
 }
 
+VALUE rb_sym_hash(VALUE);
+
 /*
  *  A <code>String</code> object holds and manipulates an arbitrary sequence of
  *  bytes, typically representing characters. String objects may be created
@@ -9311,6 +9313,7 @@ Init_String(void)
     rb_undef_method(CLASS_OF(rb_cSymbol), "new");
     rb_define_singleton_method(rb_cSymbol, "all_symbols", rb_sym_all_symbols, 0); /* in symbol.c */
 
+    rb_define_method(rb_cSymbol, "hash", rb_sym_hash, 0); /* in hash.c */
     rb_define_method(rb_cSymbol, "==", sym_equal, 1);
     rb_define_method(rb_cSymbol, "===", sym_equal, 1);
     rb_define_method(rb_cSymbol, "inspect", sym_inspect, 0);